Objectives To identify echocardiographic parameters that predict prognosis in pulmonary arterial hypertension (PAH) patients with low and intermediate risk. Methods This single-center retrospective cohort study included PAH patients classified as low or intermediate risk according to WSPH criteria. All patients were regularly followed at the First Affiliated Hospital of Nanjing Medical University. Baseline and follow-up data were collected using standardized case report forms. Missing data were imputed using the random forest method. Statistical analyses were performed using SPSS 26.0 and R 4.3.1, with a two-sided p < 0.05 considered significant. Results A total of 116 PAH patients (57 low risk, 59 intermediate risk) were enrolled. During a median follow-up of 34.8 months, 28 patients (24.1%) experienced clinical failure events. The TAPSE/PASP ratio was an independent predictor of poor prognosis (HR = 0.002, 95% CI 1.09e-5–0.294, p = 0.015). Kaplan–Meier analysis showed that patients with TAPSE/PASP < 0.33 and IVC ≥ 16 mm had significantly worse event-free survival (p < 0.001). Conclusions The combination of TAPSE/PASP < 0.33 and IVC ≥ 16 mm identifies poor prognosis among low- and intermediate-risk PAH patients, providing a simple echocardiographic tool for early risk stratification.<Table Float="No" ID="Taba"> <tgroup cols="2"> <colspec align="left" colname="c1" colnum="1" /> <colspec align="left" colname="c2" colnum="2" /> <tbody> <row> <entry nameend="c2" namest="c1"> Key Points • TAPSE/PASP ratio combined with IVC diameter provides a simple, non-invasive index to identify poor prognosis in low- and intermediate-risk CTD-PAH patients. • This combined echocardiographic assessment may facilitate early recognition of right ventricular–pulmonary arterial uncoupling and guide timely treatment adjustment. • It refines risk evaluation beyond conventional WSPH stratification, supporting individualized long-term management in CTD-PAH. </entry> </row> </tbody> </tgroup> </Table>

TAPSE/PASP combined with IVC can identify poor prognosis in PAH patients with low and intermediate risk

期刊论文
发表日期：

2025年12月27日

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Wei Qian,
Yue Zhang,
Jiayi Dai,
Linwei Shan,
Huanyu Gong,
Yixin Zhang,
Yinghong Tang,
Dongyu Li,
Lin Li,
Xiaoxuan Sun,
Qiang Wang,
Lei Zhou

摘要

Objectives

To identify echocardiographic parameters that predict prognosis in pulmonary arterial hypertension (PAH) patients with low and intermediate risk.

Methods

This single-center retrospective cohort study included PAH patients classified as low or intermediate risk according to WSPH criteria. All patients were regularly followed at the First Affiliated Hospital of Nanjing Medical University. Baseline and follow-up data were collected using standardized case report forms. Missing data were imputed using the random forest method. Statistical analyses were performed using SPSS 26.0 and R 4.3.1, with a two-sided p < 0.05 considered significant.

Results

A total of 116 PAH patients (57 low risk, 59 intermediate risk) were enrolled. During a median follow-up of 34.8 months, 28 patients (24.1%) experienced clinical failure events. The TAPSE/PASP ratio was an independent predictor of poor prognosis (HR = 0.002, 95% CI 1.09e-5–0.294, p = 0.015). Kaplan–Meier analysis showed that patients with TAPSE/PASP < 0.33 and IVC ≥ 16 mm had significantly worse event-free survival (p < 0.001).

Conclusions

The combination of TAPSE/PASP < 0.33 and IVC ≥ 16 mm identifies poor prognosis among low- and intermediate-risk PAH patients, providing a simple echocardiographic tool for early risk stratification.

Key Points

• TAPSE/PASP ratio combined with IVC diameter provides a simple, non-invasive index to identify poor prognosis in low- and intermediate-risk CTD-PAH patients.

• This combined echocardiographic assessment may facilitate early recognition of right ventricular–pulmonary arterial uncoupling and guide timely treatment adjustment.

• It refines risk evaluation beyond conventional WSPH stratification, supporting individualized long-term management in CTD-PAH.